Specifically, Johnston referenced and lifted from Powell's 1946 film A Matter of Life and Death
https://www.youtube.com/watch?v=S0veuSLLWZ0Video can't be loaded because JavaScript is disabled: A Matter of Life and Death – official trailer – 4K restoration (https://www.youtube.com/watch?v=S0veuSLLWZ0)
A Matter of Life and Death starred David Niven as a bomber pilot trapped on his damaged plane as it goes[...]